If Rihanna doesn't get that #1 on Black Friday, then she won't get it any time during the Christmas holiday season. She usually experiences big drops, and whoever ends up with that #1 album will probably have multiple weeks at #1. These pop albums do not really do well during the Christmas season. However, Rihanna could be lucky to finally get that #1 album after Christmas when all that hype dies, but she will probably have weak sales that week.